Coupling guard



FIG. 1 is a front perspective view of a coupling guard showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is an elevational view taken from one side thereof; and

FIG. 8 is an elevational view taken from the side opposite that shown in FIG. 7. 

The ornamental design for a coupling guard, as shown. 